Technics SC-CH570

Before
requesting
service
for
this
unit,
check
the
chart
below
for
a
possible
cause
of
the
problem
you
are
experiencing.
Some
simple
checks
or
a
minor
adjustment
on
your
part
may
eliminate
the
problem
and
restore
proper
operation.
If you are in doubt about some of the check points,
or
if
the
remedies
indicated
in
the
chart
do
not
solve
the
problem,
refer
to
the
directory
of
Authorized
Service
Centers
(enclosed
with
this
unit)
to
locate
a
convenient
service
center,
or
consult
your
dealer
for
instructions.
Problem
Problems common
The location of the various
musical instruments is not
well defined.
Probable cause(s)
to all systems
The (+) and (—) connections to one of the
speakers are reversed.
Suggested remedy
Connect the speaker cord correctly.
The left and right sounds
are reversed.
The left and right connections to the speaker are
reversed.
Connect the speaker cords correctly.
Humming is heard while
playing.
A
power
cord
or
fluorescent
lamp
is
located
in
the
vicinity
of
cables.
plugging the cord in the other way.
Keep
electric
appliances
away
from
the
stereo.
Try
Only one speaker is
emitting sound.
One of the wires of the speaker cord is
disconnected.
Connect the speaker cord correctly.
There is no sound when a
source is belng played.
The (+) and (—) wire of the speaker cords are
shorted.
Switch
the
system
to
the
standby
mode,
and
reconnect
the
speaker
cords
so
that
they
are
not
shorted.
Then
switch
on
the
power.
“U70” appears on the
display.
While listening to F
There is a “rushing noise”
during a stereo broadcast
which is not audible during
@ monaural broadcast.
You hear excessive nolse
during a stereo broadcast,
and occasionally the sound
disappears.
The stereo indicator
flickers and does not light
completely.
Flat cables are not connected steadily.
M broadcasts
The transmitting station is a long distance away.
The installation location and orientation of the
antenna are unsuitable.
The
transmitting
station
is
a
long
distance
away.
Connect the flat cables steadily.
When
the
“U70”
display
is
not
cleared
after
the
flat
cables
have
been
connected
properly,
the
unit
is
damaged.
Consult
your
dealer.
If
you
are
using
an
indoor
antenna,
change
to
an
outdoor
antenna.
elf
you
are
using
a
high-grade
outdoor
antenna,
try
changing
the
installation
location,
height,
and
orientation.
The power of the TV set or VCR is ON.
Try switching off the TV set or VCR.
The sound during a stereo
broadcast Is highly
distorted.
While listening to A
You hear an unusual beat
sound.
There
is
a
building
or
mountain
nearby.
[Distortion
is
caused
by
interference
between
the
signal
from
the
transmitting
station
(direct
wave)
and
the
signal
reflected
from
the
building
or
mountain
(reflected
wave).]
M broadcasts
You are using the system at the same time you
are playing a TV set.
Use
a
high-grade
outdoor
antenna,
and
install
it
in
@
good
location,
height,
and
orientation
for
reception.
Switch off the TV set, or use the system further
away from it.
You hear a low-frequency
hum.
The picture on the TV
disappears or stripes
appear on the screen.
When there is a tele
The antenna wire is near the power cord.
vision set nearby
The location and orientation of the antenna are
incorrect.
Separate the antenna wire from the power cord.
Hf you are using an indoor antenna, change to an
outdoor antenna.
The wiring at the back of the system is unsuitable.
Separate the antenna wire of the TV set from the
system.